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Questions and Answers

Which type of soil is not ideal for buildings due to its tendency to shift around as it dries or moistens?

  • Gravel
  • Clay (correct)
  • Rock
  • Sand
  • What is the main advantage of sand and gravel soil for building foundations?

  • Low risk of shifting
  • High bearing capacity
  • Quick drainage (correct)
  • Resistance to cracks
  • Which type of foundation is recommended for clay soil to combat its tendency to shrink and expand?

  • Slab-on-grade foundation (correct)
  • Helical pier foundation
  • Drilled pier foundation
  • Rock/bedrock foundation
  • What is the main advantage of rock/bedrock soil for building foundations?

    <p>High bearing capacity</p> Signup and view all the answers

    Which type of soil foundation has deeper depths to increase stability in clay soil?

    <p>Drilled pier foundation</p> Signup and view all the answers

    What can happen to sand over time that may require a different foundation technique?

    <p>Washing away</p> Signup and view all the answers

    Which type of soil is not recommended for building foundations due to its tendency to shift and form structural and non-structural cracks?

    <p>Clay</p> Signup and view all the answers

    What is the main advantage of compacted sand and gravel for building foundations?

    <p>Low risk of shifting</p> Signup and view all the answers

    Which type of foundation is suitable for sandy soil that has experienced sand erosion?

    <p>Helical pier foundation</p> Signup and view all the answers

    Which type of soil has a layer of rock underneath a surface layer of soil?

    <p>Rock/bedrock</p> Signup and view all the answers

    Which type of soil is considered the best for construction due to its ideal combination of silt, sand, and clay?

    <p>Loam</p> Signup and view all the answers

    What is the main drawback of building on loam soil?

    <p>Undecomposed material</p> Signup and view all the answers

    Which type of soil is considered a very poor soil type for a foundation due to its high water retention and shifting characteristics?

    <p>Peat</p> Signup and view all the answers

    Which type of soil is also considered a poor option for building a foundation due to its prolonged ability to retain water and cause shifting and expansion?

    <p>Silt</p> Signup and view all the answers

    What is the most important thing to ensure when building a foundation on bedrock?

    <p>Leveling the surface</p> Signup and view all the answers

    What are the potential consequences of not considering the soil type before construction?

    <p>Both immediate and future foundation issues</p> Signup and view all the answers

    What can happen if a building is constructed on peat soil?

    <p>Cracks in the foundation</p> Signup and view all the answers

    What is the main advantage of building on bedrock compared to clay soil?

    <p>Stability and resistance towards water damage</p> Signup and view all the answers

    What type of soil is considered the best for supporting a foundation due to its combination of silt, sand, and clay?

    <p>Loam</p> Signup and view all the answers

    What should builders be aware of beyond water retention when considering soil type for construction?

    <p>The presence of undecomposed material</p> Signup and view all the answers

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